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<h3><a name="SECTION0019135000000000000000">
17.1.3.5 Replacing os.popen*</a>
</h3>

<p>
<div class="verbatim"><pre>
pipe = os.popen(cmd, mode='r', bufsize)
==&gt;
pipe = Popen(cmd, shell=True, bufsize=bufsize, stdout=PIPE).stdout
</pre></div>

<p>
<div class="verbatim"><pre>
pipe = os.popen(cmd, mode='w', bufsize)
==&gt;
pipe = Popen(cmd, shell=True, bufsize=bufsize, stdin=PIPE).stdin
</pre></div>

<p>
<div class="verbatim"><pre>
(child_stdin, child_stdout) = os.popen2(cmd, mode, bufsize)
==&gt;
p = Popen(cmd, shell=True, bufsize=bufsize,
          stdin=PIPE, stdout=PIPE, close_fds=True)
(child_stdin, child_stdout) = (p.stdin, p.stdout)
</pre></div>

<p>
<div class="verbatim"><pre>
(child_stdin,
 child_stdout,
 child_stderr) = os.popen3(cmd, mode, bufsize)
==&gt;
p = Popen(cmd, shell=True, bufsize=bufsize,
          stdin=PIPE, stdout=PIPE, stderr=PIPE, close_fds=True)
(child_stdin,
 child_stdout,
 child_stderr) = (p.stdin, p.stdout, p.stderr)
</pre></div>

<p>
<div class="verbatim"><pre>
(child_stdin, child_stdout_and_stderr) = os.popen4(cmd, mode, bufsize)
==&gt;
p = Popen(cmd, shell=True, bufsize=bufsize,
          stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
(child_stdin, child_stdout_and_stderr) = (p.stdin, p.stdout)
</pre></div>

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